angular5 ui-router 视图嵌套时如何指定二级视图显示默认页面

Question

angular5 视图嵌套时如何指定二级视图显示默认页面
const routes: Routes = [

{
path: 'platform',
component: PlatformComponent,
children: [
  {
    path: 'pl01',
    component: Pl01Component
  },
  {
    path: 'pl02',
    component: Pl02Component
  },
  {
    path: 'pl03',
    component: Pl03Component
  }
]

},
]
没有默认的页面，默认显示空白，请问怎么设置默认的页面呢？非常感谢

Answer 1

children: [
{path: '', redirectTo: 'pl01', pathMatch: 'full' },
{path: 'pl01',component: Pl01Component},
{path: 'pl02',component: Pl02Component},
{path: 'pl03', component: Pl03Component}
]